pa3000 four-channel, multi-phase ac/dc power analyzer pa3000 demo... · 2017. 8. 8. · pa3000...

The Tektronix PA3000 is a one- to four-channel power analyzer that is optimized for testing today’s single- and multi-phase,

high efficiency power conversion products and designs. Use it to quickly visualize, analyze, and document power efficiency,

energy consumption, and electrical performance to the latest regional and international standards.

Each test example in this demo guide discusses two methods of making the same measurements. The first method refers to

making the measurements directly on the PA3000 using the front panel, whereas, the second method demonstrates the use of

free PWRVIEW Software. In each test example, the second method (PWRVIEW) is the preferred method, because it is easier

and enables more user flexibility and customization options.

Tektronix recommends reviewing all of the test examples to reach the best understanding of all features offered by the PA3000

and the PWRVIEW Software.

Table of Contents

Test 1: Efficiency Testing Single Phase Applications ................................................................................................... 1

Test 2: Efficiency Testing Three Phase Applications .................................................................................................... 9

Test 3: Energy Consumption Testing ..........................................................................................................................17

Test 4: Standby Power Measurements (IEC 62301 Ed 2.0) ....................................................................................... 23

Test 5: Inrush Current Testing .................................................................................................................................................29

PA3000 Four-channel, Multi-phase AC/DC Power Analyzer––HOW-TO DEMONSTRATION GUIDE

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TEK.COM | 1

PA3000 Four-channel, Multi-phase AC/DC Power AnalyzerEfficiency Testing Single Phase Applications

DEMONSTRATION GUIDE

Efficiency Testing Single Phase Applications

This example demonstrates a simple method to make efficiency measurements on an external

AC-DC power supply that is rated to the level VI efficiency standard. Similar principles can also

be applied to efficiency testing on any AC-DC power supply, DC-AC inverter, and other related

converter including solar inverter and UPS systems.

TEST SETUP

Complete the following steps to setup the efficiency measurement on an AC-DC power supply with the PA3000 Power Analyzer:

1. Connect the AC input on the device under test (DUT) to the first channel of the PA3000

using a Tektronix Breakout Box (BB1000) as shown in the wiring diagram.

(See Figure 1-2.)

2. The breakout box taps in to the current signal and measures the voltage across the input

terminals. The breakout box makes it easier and safer to connect the input AC signal on the DUT using the 4 mm safety leads provided with PA3000.

3. Connect the output DC terminals on the second channel of the PA3000 using the provided

safety leads. The current shunt on the PA3000 is connected in series with the output load; the voltage channels are connected across the positive and negative terminals of the power

supply as show in the figure.

4. After making all of the connections, use one of the two methods to make the efficiency measurement.

PA3000 POWER ANALYZER (FRONT PANEL)

AC LINE

BB1000-UNBREAKOUT BOX

Example test configuration and measurement results for testing AC/DC power supplies and LED drivers.

Time

Volts

/Am

ps

Time

Effic

ienc

y

Vout

Time

2380 ELECTRONIC LOADPOWER SUPPLY UNDER TEST

Figure 1-1. Efficiency Testing setup for AC-DC Power Supply.

WATCH VIDEOHow to Make Efficiency Measuremensts on AC-DC Power Supply

www.tek.com/effciency1ph_video

http://www.tek.com/effciency1ph_video


2 | TEK.COM


DEMONSTRATION GUIDE

METHOD 1: EFFICIENCY MEASUREMENTS ON SINGLE PHASE AC-DC POWER SUPPLIES. (PA3000 DIRECT)

The following steps describe the process for setting up the PA3000 for efficiency

measurements on an AC-DC power supply.

WHAT YOU WILL NEED — METHOD 1

• PA3000 Power Analyzer • BB1000 Break Out Box

• AC-DC Power Supply (DUT) • Electronic Load (Keithley 2380) (Optional)

• 4mm Safety Leads • AC Source (Optional)

Figure 1-3. Efficiency measurement on the PA3000.

Figure 1-2. AC-DC efficiency measurement wiring diagram.

TEK.COM | 3


DEMONSTRATION GUIDE

This procedure can also be used for testing efficiency on other applications

such as UPS systems, LED drivers, or DC-AC inverters.

1. Set the PA3000 to the default configuration:

– Press .

– Scroll down to User Configuration and press .

– Select Load Default Configuration, and then press to confirm. The PA3000 will load

the defaults and display a confirmation screen. Press and then return to the Main

Menu by pressing .

2. In the Main Menu, go to Measurements, press , and then select the desired

parameters for the AC input signal. – The first channel will be represented as Group A on the yellow bar at the top of the screen. – Select the desired measurements: Vrms, Arms, Watts, VA, PF, Acf, Athd, and A Harmonics.

3. Select Group B representing the second channel on the PA3000 by pressing the right arrow

key on the left panel of the PA3000.

4. Select the desired measurements for the DC output such as Watt, Vdc, and Adc; deselect

any preset measurements that are not needed.

5. After selecting all of the desired parameters, press to view the Results screen.

– The PA3000 is now set up for making AC and DC measurements on the first and second

channels respectively.

6. Power on the DUT from the AC source; an appropriate load can be applied to the DUT at this point.

– The Results screen should start updating the real time measurements.

7. The Math function can be used for calculating efficiency. Press to set up efficiency formula.

8. On the Math screen, press the MATH soft key.

9. Select the desired function from the list and then press to enter the options.

NOTE: The Edit Function can be used to edit any specific math formula. While in the edit function, press to enter the Help menu for help in formatting the function or refer to the

information earlier in this manual.

10. For the efficiency calculations, enter (CH2:W/CH1:W)*100 and then press . Press

to go back to Math menu where the function can be renamed and units can be added, if desired.

11. Go back to the Math menu and scroll down to the newly edited function and enable the

function by pressing . Select all functions that need to be displayed on the screen.

12. Press to view the Results screen.

13. To view selected math formulas, press .

14. To view math formulas along with other results, press to view the Results screen and

press multiple times until the math window appears at the bottom of the screen.

15. PA3000 Power Analyzer is now ready to take efficiency measurements.

Optional Steps when using Keithley 2380 Electronic Load

16. Set the Keithley 2380 Electronic load in Constant-Current (CC) mode by pressing the CC key on the front panel and set the value for full load current based on the output specification of the power supply under test. Press the on/off button.

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DEMONSTRATION GUIDE

17. Generally a 30 minute warm-up period is required by the standard, before

any efficiency measurements are made on an AC-DC Power Supply.

18. Check for power stability measurements for five minutes on the input of the Power Supply

and then log an efficiency measurement at 100% load.

19. Repeat this step at 75%, 50%, 25% and 0% load by entering those values on the

front panel of the 2380 Electronic load.

20. Let the Power supply stabilize for five minutes between each load step change.

FURTHER SETTINGS IF REQUIRED

Data Logging. The logging feature allows you to log data over time for prolonged efficiency

testing involving load and source sweeps. Use the DATA OUT key to log data to any compatible

flash drive connected to the front panel USB connector. The actual logging interval can be

changed by pressing and going to Interfaces USB Host Data Out. The log file will be

saved as a .csv file.

Waveforms and Harmonics. To monitor AC input waveforms and harmonics, use the

or key respectively. Switch between channels by using the arrow keys on the left panel.

Various options for viewing waveforms and harmonics can be selected from within the Graphs

and Waveforms menu.

Figure 1-4. Harmonic bar chart on the PA3000.

2380 Electronic Load Programming. The ‘List’ mode on 2380 Electronic Load can be

used to automate efficiency testing.

• The load can be set up to automatically step through a set of different load values.

The load can be programmed to execute the list with a fixed time at each step.

• Alternatively, the load can be triggered via a hardware, external trigger or a command

from a controller.

• For more information on how to setup list mode on 2380 Electronic Load, refer to the product

user manual (Document no: 2380-120-60-901-01 Rev. A)

TEK.COM | 5


DEMONSTRATION GUIDE

METHOD 2: EFFICIENCY MEASUREMENTS ON SINGLE PHASE AC-DC POWER SUPPLIES. (PWRVIEW SOFTWARE)

The following steps describe the process for setting up the PWRVIEW software

with a PA3000 for efficiency measurements.


• PA3000 Power Analyzer • PC with PWRVIEW software installed

• AC-DC Power Supply (DUT) • USB cable

• 4mm Safety Leads • Electronic Load (Keithley 2380)

• BB1000 Break Out Box • AC Source (Optional)

Figure 1-5. Efficiency measurement with the PWRVIEW software.

1. Connect the PA3000 to the computer with the PWRVIEW software installed using

the supplied USB cable. Ethernet or GPIB can also be used, if desired.

2. Open the PWRVIEW software by double-clicking the desktop icon.

3. Click the Add button to connect the PA3000. All available instruments will be listed

in the selection panel.

4. Select the desired instrument (the PA3000) and then click Connect.

NOTE: There are various default applications and compliance tests on the left panel from which you can select. This example discusses the AC-DC LED Driver efficiency

measurement. This method can also be used for similar AC-DC power supplies

5. Select LED Driver Efficiency under the Applications/Test section on the left panel and then

click the Wizard button. The wizard helps with wiring and shunt selections. A 1A shunt or

30A shunt can be selected based on the peak input and output currents.

6. Make changes on the setup wiring as suggested.

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DEMONSTRATION GUIDE

7. Click Finish when done, and the page will direct you to the Efficiency Setup tab.

8. Verify the instrument and group information and then click the check box for the

Measurement Efficiency. PWRVIEW is now ready to take efficiency measurements.

9. Click the Measure tab page at the top and then click the blue Start button. The

measurements will start updating.

10. To add more measurements or change other settings, such as range and filters, go to the

Setup tab and select the desired settings.

NOTE: The measurements must be stopped to make any changes on the Setup page.

Stop the measurements by clicking the Stop button on the bottom of the Setup page.

Optional Steps when using Keithley 2380 Electronic Load

11. Set the Keithley 2380 Electronic load in Constant-Current (CC) mode by pressing the CC

key on the front panel and set the value for full load current based on the output

specification of the power supply under test. Press the on/off button.

12. Generally a 30 minute warm-up period is required by the standard, before any efficiency

measurements are made on an AC-DC Power Supply.

13. Check for power stability measurements for five minutes on the input of the Power Supply

and then log an efficiency measurement at 100% load.

14. Repeat this step at 75%, 50%, 25% and 0% load by entering those values on the front

panel of the 2380 Electronic load.

15. Let the Power supply stabilize for five minutes between each load step change.


Waveform, Harmonics, and Trend Chart. In the measurement Grid, you can view

Waveform, Harmonics, and Trend charts by clicking the respective icons on the menu bar.

Figure 1-6. Efficiency Trend Chart.

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DEMONSTRATION GUIDE

• Waveforms in the PWRVIEW software are constructed using the harmonic data collected

from the power analyzer. The accuracy of the waveform depends on the amount of harmonic

information available. For optimum results, select maximum number of harmonics to display in

the setup area. Selecting 100 harmonics for the PA3000 gives the best results. If no harmonics

are selected, waveform feature will display a blank screen.

• The Harmonic bar chart can be enabled for all voltage, current, and watts measurements.

Up to 100 harmonics can be selected throug the setup screen. Hovering over any harmonic

bar will display the absolute value and percentage of fundamental for that harmonic.

• The Trend chart can be activated for any measurement parameter by either right clicking on

the desired parameter or by clicking the Trend icon on menu bar. The Trend chart can be reset

by using the Reset button on the menu bar.

Data Logging. Recording data is important for most efficiency measurements where load and

source sweep is required.

Figure 1-7. Logging setup.

• To record data using PWRVIEW, click the Record button on the menu bar. The software

will start recording all the selected data including formulas and limits.

• To change the data logging rate or to set the total log time, click the down arrow on the

Record icon to open the data logging setup. Here you can select the desired logging

duration and interval.

• To stop the data logging, click the Stop button.

• All the recorded data is stored in a database on the local computer. To access the data, click

the Results tab and then click the Measure icon. The dialog box will present all the archived data.

• Select the desired data set and export to either an Excel or a .csv format.

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DEMONSTRATION GUIDE

Custom Limits. Custom limits can also be set with any of the measurement parameters.

Custom limits help set limits based on various standards or test specifications.

Figure 1-8. Custom limits.

• To set custom limits, either right-click the desired measurement parameter or click the Limits

Setup icon on the menu bar. Stop the measurement update to set up custom limits.

• Custom limits will appear as a separate tab on the measurement grid. The result column will

display red fonts if the limits are failing. Hovering over the results will display the limit function,

limit value, and relative value.

2380 Electronic Load Programming. The ‘List’ mode on 2380 Electronic Load can

be used to automate efficiency testing.

• The load can be set up to automatically step through a set of different load values.

The load can be programmed to execute the list with a fixed time at each step.

• Alternatively, the load can be triggered via a hardware, external trigger or a command

from a controller.

• For more information on how to setup list mode on 2380 Electronic Load, refer to the

product user manual (Document no: 2380-120-60-901-01 Rev. A)

TEK.COM | 9

PA3000 Four-channel, Multi-phase AC/DC Power AnalyzerEfficiency Testing Three Phase Applications

DEMONSTRATION GUIDE

Efficiency Testing Three Phase Applications

This example demonstrates a simple method to make efficiency measurements on a three phase

motor drive. Similar principles can also be applied to efficiency testing on any three phase inverters

and other DC-AC converters.

Vo

lts

Time

Am

ps/

Vo

lts

Time

Torq

ue

Speed

3∅ INPUT

3∅ PWM OUTPUT

MOTOR DRIVEMOTOR DYNAMOMETER

TORQUEAND SPEED


METHOD 1: EFFICIENCY MEASUREMENTS ON THREE PHASE PWM MOTOR DRIVE (PA3000 DIRECT)

This method demonstrates three phase power and efficiency measurements on a single

phase input and three phase output PWM motor drive directly on the PA3000 display.



• Three Phase Inverter (Motor Drive) • AC Source (Optional)

• 4mm Safety Leads

TEST SETUP

The following steps describe the process to set up the efficiency measurement on

a single phase input PWM motor drive using the PA3000.

1. Connect the single phase AC input on the PWM motor drive to the first channel of the

PA3000 using a Tektronix BB1000 Breakout Box as shown in wiring diagram.

– The breakout box taps into the current signal and measures the voltage across the input

terminals. It makes it easier and safer to connect input the AC signal on the DUT with the

4mm safety leads provided with the PA3000.

Figure 2-1. Three Phase Efficiency Testing on a PWM Motor Drive.

WATCH VIDEOHow to Make Efficiency Measurements on a Three Phase Motor Drive

www.tek.com/effciency3ph_video



10 | TEK.COM


DEMONSTRATION GUIDE

2. Connect the three phase output of the PWM drive to other three channels using

the 3-phase 4-wire configuration as shown in the wiring diagram.

– All three phases are set up in series with the internal shunt and the voltage

is measured across respective phase and neutral.

3. If the motor drive does not have a dedicated neutral cable, create a floating neutral by

connecting all three VLO terminals on channels 2, 3, and 4 together.

4. After making all of the connections, set the PA3000 to the default configuration:

– Press .


– Select Load Default Configuration, and then press to confirm.

The PA3000 will load the defaults and display a confirmation screen. Press and then

return to the Main Menu by pressing .

5. To select the correct wiring configuration within the Main Menu, go to

Inputs Wiring Configuration and select 1 Phase 2 Wire for Group A.

6. Scroll to Group B by pressing the arrow key on the left front panel and select 3 Phase 4 Wire.

NOTE: If desired, both groups can be named for ease of monitoring. Go back one step and enter the appropriate name using the Group Name option.

7. The PA3000 makes it easy to configure important settings using default modes.

For the PWM motor drive output, from the Main Menu, select Modes

Select Mode PWM Motor.

– The PWM Mode will set up the PA3000 to accurately measure the output voltage of a

typical PWM drive that switches at high frequencies. The algorithm applies a proprietary

sensing method to determine the actual fundamental power frequency in real time for all

power calculations so that the calculated power and harmonic data are always accurate

even in dynamic speed conditions.

– The PWM Mode is not required for the input line frequency measurements.

– To enable sum measurements for the three phase output on group B, enable the Sum

Results column by entering the Main Menu and going to Measurement Configuration

Sum Results Column Enabled.

Figure 2-2. PWM motor drive efficiency (1 phase in and 3 phase out).

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DEMONSTRATION GUIDE

8. To make the efficiency measurements, enable the Math function by pressing and

then pressing the MATH soft key.

9. Select the desired function to edit and press to enter the options.

NOTE: The Edit Function can be used to edit any specific math formula. While in the edit

function, press to enter the Help menu for help in formatting the function or refer to

the information earlier in this manual.

10. For the efficiency calculation, enter (GRPB:SUM:W/CH1:W)*100 and then press .

Press to go back to the Math menu where the function can be renamed and units can

be added, if desired.

11. Go back to the Math menu and scroll down to the newly edited function and select the

function by pressing . Select all functions that need to be displayed on the screen.

12. Press to view the Results screen.

13. To view selected math formulas, press .

14. To view math formulas along with other results, go back to the Results screen and

press multiple times until the math window appears at the bottom of the screen.

You are now ready to take efficiency measurements on a PWM Motor drive with single

phase input and three phase output.


Torque and Speed Inputs. The overall efficiency of a motor drive system requires measuring real-

time speed and torque data.

The PA3000 has four analog and two counter inputs to enable various auxiliary input measurements

such as torque and speed.

• Refer to the pin number for desired analog or counter input under Auxiliary inputs/outputs and

connect the signal (torque, speed, or others) directly to the respective pin on the AUXILIARY

INPUTS/OUTPUTS connector on the rear panel.

• The auxiliary inputs can be enabled and viewed through the math screen. Press and

then press the MATH soft key to enter options. Select any desired function and edit function

as ANA1, ANA2, ANA3, or ANA4 for analog inputs and COUNT1 or COUNT2 for counter inputs

to enable and view auxiliary inputs on the screen.

• To view the math screen along with other results, press multiple times until the math

window appears on the bottom of the display.



flash drive connected to the front panel USB connector. The actual logging interval can be changed

by pressing and going to Interfaces USB Host Data Out. The log file will be saved as

a .csv file.

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DEMONSTRATION GUIDE

Waveforms, Harmonics, and Vector Graphs. Waveforms, harmonics, and vector graphs

can be enabled for all three phase signals.

• To monitor AC waveforms, harmonics, or the vector graph use the , ,

or keys respectively.

• Switch between channels using the arrow keys on the front panel.

• Select various options for viewing waveforms and harmonics within the Vector

and Waveforms menus.

Figure 2-3. Vector graph on the PA3000.

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DEMONSTRATION GUIDE

METHOD 2: EFFICIENCY MEASUREMENTS ON THREE PHASE PWM MOTOR DRIVE (PWRVIEW SOFTWARE)

This method discusses efficiency measurement on three phase input and output PWM motor

drives using the PWRVIEW software.



• Three Phase Inverter (Motor Drive) • USB cable


Figure 2-4. PWM Motor drive efficiency (3-phase in and 3-phase out).

TEST SETUP

1. Connect the three phase AC input of the PWM motor drive to the first two channels of the

PA3000 as shown in wiring diagram. (See Figure 2-4.)

2. Connect the three phase output of the PWM drive to the other two channels using the

configuration as shown in the wiring diagram.

NOTE: The 3-phase 3-wire (2 Wattmeter) configuration enables testing three-phase signals by using two power channels. This method can be used for simultaneously testing 3-phase input and outputs on a 4-channel power analyzer.

3. After making all of the power connections, connect the PA3000 to the computer with the

PWRVIEW software installed using the supplied USB cable. Ethernet or GPIB can used.

4. Open the PWRVIEW software by double-clicking the desktop icon. Click the Add button to connect the PA3000. All available instruments will be listed in the selection panel.

Select the desired instrument (the PA3000) and then click Connect.

NOTE: There are various default applications and compliance tests on the left panel that you can select from.

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DEMONSTRATION GUIDE

5. Select PWM Motor Drive Efficiency under the Applications/Test section on the left panel

and then click the Wizard button.

6. The wizard helps with wiring and shunt selections.

7. Select the three phase input and three phase output on the wizard and enter the expected

current in the appropriate box.

8. Click Finish when done and the page will direct you to the Efficiency Setup tab.

9. Verify that the instrument and group information and then click the check box for the

Measurement Efficiency.

10. PWRVIEW is now ready to take efficiency measurements.

11. Go to the Measure tab and then click the blue Start button. The measurements will start updating.

12. To add more measurements or change other settings, such as range and filters, go to the Setup

tab and select the desired settings.

NOTE: The measurements must be stopped to make any changes on the Setup page. Stop the measurements by clicking the Stop button on the bottom of the Setup page.


Torque and Speed Inputs. The overall efficiency of a motor drive system requires measuring

real-time speed and torque data. The PA3000 has four analog and two counter inputs to enable

various auxiliary input measurements such as torque and speed.

• Refer to the pin number for desired analog or counter input under Auxiliary inputs/outputs

and connect the signal (torque,speed, or others) directly to the respective pin on the

AUXILIARY INPUTS/OUTPUTS connector on the rear panel.

• To enable the auxiliary inputs using PWRVIEW, go to the Setup tab.

• On the Setup tab, go to the Wiring page and select the check box near the bottom of the

page for enabling the Auxiliary Inputs (Analog and Counters). A new tab page named Auxiliary

Inputs will be created.

Figure 2-5. Auxiliary inputs setup for torque and speed measurements.

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DEMONSTRATION GUIDE

• On the Auxiliary Inputs tab page, enter the desired label, units and equation for the

respective analog and counter inputs Equation Guidelines on the bottom can be used

for assistance with entering equations. Enable the desired inputs.

• Go to the Measure tab page and click the Start button.

• The selected analog and counter input signals will be displayed on the measurement

grid with proper labels and units.

• Desired formulas for further equating system efficiency using analog and counter inputs

along with any other measurement parameters can be entered in the Formula column on

the measurement grid.

Data Logging. Recording data is important for most efficiency measurements where load and

source sweep is required.

• To record data using PWRVIEW, click the Record button on the menu bar. The software will

start recording all the selected data including formulas and limits.

• To change the data logging rate or to set the total log time, click the down arrow on the Record

icon to open the data logging setup. Here you can select the desired logging duration and interval.


• All the recorded data is stored in a database on the local computer. To access the data, click

the Results tab and then click the Measure Icon. The dialog box will present all the archived data.


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DEMONSTRATION GUIDE

Waveform, Harmonics, and Trend Chart. In the measurement grid, you can view waveforms,

harmonics, and trend charts by clicking the respective icons on the menu bar.

• Waveforms in the PWRVIEW software are constructed using the harmonic data collected from

the PA3000. The accuracy of the waveform depends on the harmonic information available.

For optimum results, select the maximum number of harmonics to display in the setup area.

Selecting 100 harmonics for the PA3000 gives the best results. If no harmonics are selected,

waveform feature will display a blank screen.

• The Harmonic bar chart can be enabled for all voltage, current, and watts measurements. Up

to 100 harmonics can be selected through the setup screen. Hovering over any harmonic bar

will display the absolute value and percentage of fundamental for that harmonic.

• The Trend chart can activated for any measurement parameter by either right-clicking the

desired parameter or by clicking the Trend icon on menu bar. The Trend chart can be reset by

clicking the Reset button on the menu bar.

Custom Limits. Custom limits can also be set with any of the measurement parameters. Custom

limits help set limits based on various standards or test specifications.

• To set custom limits, either right-click the desired measurement parameter or click the Limits

Setup icon on the menu bar. Stop the measurement update to set up custom limits.

• Custom limits will appear as a separate tab on the measurement grid. The result column will

display red fonts if the limits are failing. Hovering over the results will display the limit function,

limit value, and relative value.

Figure 2-6. Harmonic bar chart.

TEK.COM | 17

DEMONSTRATION GUIDEPA3000 Four-channel, Multi-phase AC/DC Power AnalyzerEnergy Consumption Testing

Energy Consumption TestingEnergy consumption testing on home and office appliances is required for compliance to many

international and regional standards programs such as ENERGY STAR®. Energy consumption

testing involves the integration of power consumed over a long period of time, often days. Use the

dedicated Integration Mode on the PA3000 to make energy consumption testing easier and faster.

Figure 3-1. Energy Consumption Testing on Home and Office Appliances.

Time

WH

r

Frequency

Har

mon

ics

APPLIANCES UNDER TEST

AC LINE

PA3000 POWER ANALYZER (REAR PANEL)

BB1000-UNBREAKOUT BOXES

TEST SETUP The following steps describe the process to set up energy consumption measurements on

a home or office appliance using a PA3000. This method can be used for testing energy

consumption of any DUT that plugs into the AC wall socket for power.

Figure 3-2. Energy consumption measurements wiring diagram.

1. Connect the AC input on the DUT to the first channel of the PA3000 using a Tektronix

BB1000 Breakout Box as shown in the wiring diagram.

The breakout box taps in to the current signal and measures the voltage across the input

terminals. It makes it easier and safer to connect the input AC signal on the DUT using

the 4 mm safety leads provided with the PA3000.

2. After making all the connections, use one of the two methods to make efficiency measurements.

WATCH VIDEOHow to Make Energy Consumption Measurements on Appliances

www.tek.com/consumption_video

http://www.tek.com/consumption_video

http://www.tek.com/consumption_video

18 | TEK.COM


METHOD 1: ENERGY CONSUMPTION MEASUREMENTS (PA3000 DIRECT)The following steps describe the process to set up energy consumption testing on home

or office appliances using the PA3000.



• Home or Office Appliance (DUT) • AC Source (Optional)


Figure 3-3. Energy consumption testing on the PA3000.

TEST SETUP


– Press .



The PA3000 will load the defaults and display a confirmation screen.

Press and then return to the Main Menu by pressing .

2. To enable the Integrator mode, go to Modes Select Mode Integrator.

3. Press , select Setup Modes Integrator Setup, and select the desired start method.

– Manual works by pressing INTEG RUN key to start and stop integration. – Clock allows for setting up a specific time to start integration. – Level allows you to set trigger levels on a specific signal to start the integration measurement.

4. Go back to the Integrator Setup menu to configure the clock start, duration or the trigger level.

NOTE: The Integrator Setup menu also provides an option to set up the target power factor for the design. This feature displays the value of VArs required to correct the average power factor to the target power factor.

5. After you have set the integration mode and selected the start-stop method, press .

The PA3000 will display integration parameters such as: Hr, Whr, VAHr, and AHr.

6. Power on the DUT and the results on the PA3000 should start updating.

– The integration results will display zero until it is triggered either manually using the INTEG

RUN key on the front panel or by the selected start method.

– The LED under the INTEG RUN key stays on while integration measurements are running.

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7. To stop the integration, press the INTEG RUN key again; to reset, use the RESET/CLEAR key.

The integrator can be run simultaneously on all groups/channels on the PA3000. While in the integrator mode, the integration graph can be enabled by pressing . The graph displays all integration measurements for a given group. Scroll through the different groups by using the arrow

keys on the front panel. Other parameters to graph can be selected by pressing the INT soft key.




flash drive connected to the front panel USB connector. The actual logging interval can be changed

by pressing and going to Interfaces USB Host Data Out. The log file will be saved as

a .csv file

Ranging. By default the PA3000 is auto-ranging. Auto-ranging is fast and generally unnoticeable,

but might lead to loss of data while the auto-ranging occurs. Using a fixed range while measuring

energy consumption ensures that no data is lost during the ranging process. To set a fixed range,

press and go to Ranging Current Range, and then choose a suitable fixed range, based

on the measurements made during auto-ranging. If the range is too low, a warning message

will display. This will not harm the PA3000. The range should not be set too high as this will

compromise the overall accuracy.

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METHOD 2: ENERGY CONSUMPTION TESTING (PWRVIEW SOFTWARE)

The following steps describe the process to set up energy consumption tests on home or

office appliances using a PA3000 with the PWRVIEW software.



• Home or Office Appliance (DUT) • USB cable


• BB1000 Break Out Box

1. Use the same test setup as with the preceding PA3000 direct example.


PWRVIEW software installed using the supplied USB cable. Ethernet or GPIB can also be used.


4. Click the Add button to connect the PA3000. All available instruments will be listed in the s

selection panel.


NOTE: There are various default applications and compliance tests on the left panel.

6. Select Energy Consumption under the Applications/Test section on the left panel and then

click the Wizard button.

7. The wizard helps with wiring and shunt selections.

8. The PA3000 can compute the value of VArs required to correct the power factor to a target value.

This can be selected with the wizard by entering the desired power factor.

9. Click Next to review and then click Finish.

10. Go to the Measure tab and then click the Start button to start the measurements.

All integration measurements will be initialized as zero values.

11. Click the green Start button on the top ribbon to start the integration.

Each of the integration measurements should start updating in real time.

12. Reset the integration, if needed, by clicking the green Reset button.

13. Each individual channel can be used to run integration testing on more than one device.

Integration testing can also be used for three phase devices. Select Integration from the Mode

drop-down menu on the Setup page for desired channels or for the three phase group.

TEK.COM | 21



Trend Chart. The integration graph can be activated through

the Trend chart feature in PWRVIEW.

• The Trend chart can be activated for any integration measurement by either right-clicking the

desired parameter or by clicking the Trend icon on the menu bar. The Trend chart can be reset

by using the Reset button on the menu bar.

Figure 3-4. Integration trend chart.

Data Logging. Recording data is important for most energy consumption testing.

• To record data using PWRVIEW, click the Record button on the menu bar. The software

will start recording all the selected data including formulas and limits.

• To change the data logging rate or to set the total log time, click the down arrow on the Record

icon to open the data logging setup. Here you can select the desired logging duration and interval.


• All the recorded data is stored in a database on the local computer. To access the data,

click the Results tab and then click the

Measure icon. The dialog box will present all the archived data.


22 | TEK.COM


Custom Limits. Custom limits can also be set with any of the measurement parameters.

Custom limits help set limits based on various standards or test specifications.

Figure 3-5. Custom limits.

• To set custom limits, either right-click the desired measurement parameter or click the

Limits Setup icon on the menu bar. Stop the measurement update to setup custom limits.

• Custom limits will appear as a separate tab on the measurement grid. The result column

will display red fonts if the limits are failing. Hovering over the results will display the limit

function, limit value, and relative value.

TEK.COM | 23

DEMONSTRATION GUIDEPA3000 Four-channel, Multi-phase AC/DC Power AnalyzerStandby Power Measurements (IEC 62301 Ed 2.0)

Standby Power Measurements (IEC 62301 Ed. 2.0)Power supplies, adapters and common electrical and electronic goods often operate in standby mode. The cumulative power drawn by these and other common loads is significant and programs such as International Efficiency Standards, ENERGY STAR® and the European Eco-Directives seek to limit the power drawn by equipment when in standby mode. The typical standby power levels continue to decrease from the 1 Watt initiative of 2010 towards the level VI efficiency standards of

2016. the following section demonstrates how to test for standby power per IEC 62301 standard.

Figure 4-1. Standby power testing on AC-DC power supply.


AC LINE

BB1000-UNBREAKOUT BOX

Example test configuration and measurement results for testing AC/DC power supplies and LED drivers.

Time

Volts

/Am

ps

Time

Pow

er (W

)

POWER SUPPLY UNDER TEST

TEST SETUP

Complete the following steps to set up the PA3000 to make the standby power measurements:

Figure 4-2. Standby power measurements wiring diagram.

1. Connect the DUT using Tekronix BB1000 Breakout Box (BB1000.) See wiring diagram Figure 4-2.

2. Use the 1A shunt on the PA3000 for better accuracy if the expected current is below 1A.

3. Use the VLO Source connection for voltage. Using the VLO Source terminal for standby

power measurements, moves the voltage low node to the source side of the current shunt.

This helps eliminate measurement errors due to current drawn by voltmeter impedance of

PA3000. This is important while making very low standby power measurements. For all other

measurements, VLO Load terminal should be used.

WATCH VIDEOHow to Make Standby Power Measurements

www.tek.com/standby_video

http://www.tek.com/standby_video

http://www.tek.com/standby_video

24 | TEK.COM


METHOD 1: STANDBY POWER QUICK CHECK (PA3000 DIRECT)

The front-panel mode of the PA3000 is designed to give product designers a fast, yet reliable,

check of standby power consumption. Enabling standby power mode automatically sets a long

averaging time to average the typical power variations and bursts and it disables low-level

blanking so that very low power and current values can be displayed.

NOTE: The PA3000 samples continuously in standby mode to ensure that no data is lost.

If the expected standby current is lower than 1A, select the 1A shunt input of the PA3000.



• AC cellphone charger (DUT) • AC Source (Optional)


Figure 4-3. Standby power mode.

1. To select the 1 A shunt, go to the Main Menu (press ), go to Inputs Shunt

and select Internal 1 A; press to confirm.

2. To enable the dedicated Standby Power mode go to the Main Menu, go to

3. Modes Select Mode Standby Power, and then press to confirm.

4. Press to start making the standby measurements.


Integration time window. The default integration time is 10 seconds. This can be adjusted as

required in the Modes Setup Modes Standby Setup. If the DUT is stable, select a shorter

time for faster measurements. If the measurements are unstable, choose a longer integration time.

If in doubt, use the full-compliance method built-in to the PWRVIEW software.

Ranging. By default the PA3000 is auto-ranging. Auto-ranging is fast and generally unnoticeable,

but might lead to loss of data while auto-ranging occurs. Using a fixed range while measuring

standby power ensures that no data is lost during the ranging process. To set a fixed range, choose

Inputs Ranging Current Range and then choose a suitable fixed range, based on the

measurements made during auto-ranging. If the range is too low, a warning message will display.

This will not harm the PA3000. The range should not be set too high, as this will compromise the

overall accuracy.

TEK.COM | 25


Bandwidth. For low power standby signals that have undesired high frequency components, low

bandwidth filters can be enabled. A low bandwidth 10 kHz filter is available through the Inputs

setup. Applying low pass filters might vary the RMS values of voltage, currents, and power as high

frequency components affect the RMS values.

Autozero. Use the Autozero Run Now function under the System Configuration menu

to run autozero before running a standby power test. This will make sure that all the offsets

are compensated and the low current and power readings are accurate.

All settings can be saved for later use in the User Configuration menu.

METHOD 2: IEC 62301 ED. 2.0 FULL COMPLIANCE STANDBY POWER TESTING (PWRVIEW SOFTWARE)

The PWRVIEW software along with PA3000 can test the standby power using full compliance

techniques of IEC 62301 Ed. 2.0 / EN50564. Measurements are made easy by using the PWRVIEW

software and for making accurate measurements for full compliance standby testing. The software

calculates real time instability and executes power averaging as required by the standard.



• AC Cellphone Charger (DUT) • USB cable



Figure 4-4. Full compliance IEC 62301 Standby power test.

26 | TEK.COM


TEST SETUP



PWRVIEW software installed using the supplied USB cable. Ethernet or GPIB can also be used.


4. Click the Add button to connect the PA3000. All available instruments will be listed in the

selection panel.


NOTE: There are various default applications and compliance tests on the left panel that you can select from.

6. Click the Test button in the Application Mode area in the Menu bar. This enables the grayed

out Compliance tests on the left panel.

7. Select the IEC 62301 Standby Power option under the Compliance tests and then click the

Wizard button. The wizard provides easy steps to setup up the standby power test.

8. Enter the appropriate information on the respective pages of the wizard and then

click through all of the steps to correctly set up the PA3000 for the test.

9. If the input current is less than 1A, use the 1A shunt on the PA3000 for better resolution

and accuracy.

10. After applying all of the settings, click the Test tab on the top of the PWRVIEW window.

– Test details such as laboratory, customer, product information, and environmental c

conditions can be filled in on the top ribbon before starting the test.

– The left panel allows you to select the required power limit, expected frequency,

and input voltage.

– The default time for running the standby power test according to IEC 62301 is 15 minutes;

this can be changed based on regional or local requirements.


TEK.COM | 27

DEMONSTRATION GUIDE

Figure 4-5. IEC 62301 Ed. 2.0 standby power test report.

11. After completing all of the settings, click the Start button.

– The test will run for the time duration selected and will update all the required measurements in the left panel. The standby power variation over time is displayed graphically.

– Voltage quality, power stability, and uncertainty are also evaluated in real time as required by the standard.

– The test will display the Pass/Fail status based on all evaluated parameters.

– The test summary can be reviewed under the Results tab. All of the required parameters will be summarized with a Pass/Fail status under Test Summary and General Results.

– The Power Readings tab allows you to scroll through the time scale and to debug specific issues on a given time stamp. Use the scroll bar on the top of the window to scroll through the time line.

– The test results can be exported as a full report by clicking the Full Report PDF icon on the top ribbon. Alternately, the raw data can exported using the Export CSV icon.


28 | TEK.COM

DEMONSTRATION GUIDE


Ranging. By default, the PWRVIEW software sets up the PA3000 current range in Auto-Up-Only.

The Auto-Up-Only option ranges up the PA3000 until it finds the highest range where the input

signal is not clipped. This helps with setting the best range for the test. Otherwise, if the expected

peak currents are known, a manual range can be selected for higher accuracy. The manual range

can be selected for the selected shunt through the setup page under range options.

Bandwidth. For low power standby signals that have undesired high frequency components,

low bandwidth filters can be enabled. A low bandwidth 10 kHz filter is available through the setup

screen under the filter drop down option. Applying low pass filters might vary the RMS values of

voltage, currents, and power as high frequency components affect the RMS values.

AC Source. The IEC 62301 standby power full compliance test requires the AC source to be

very stable as detailed in the standard. The voltage and frequency are required to be within 1%

tolerance. In addition, the input voltage total harmonic content (VTHC) must be within 2% for

the first 13 harmonics and the voltage crest factor (VCF) must be within the 1.34 to 1.49 range.

Tektronix recommends using a stable external AC source that meets standard requirements

for the full compliance testing.

TEK.COM | 29

PA3000 Four-channel, Multi-phase AC/DC Power AnalyzerInrush Current Testing

DEMONSTRATION GUIDE

Inrush Current Testing

Most electrical devices draw initial current that is significantly higher than the nominal steady

state current due to low input impedance. Motor drives and transformers are known to have inrush

current twenty times higher than the steady state currents. It is important to characterize inrush

current to determine input conductor and fuse ratings.

TEST SETUP

Complete the following steps to set up the PA3000 to take the inrush current measurements:

• Connect the DUT using a Tekronix BB1000 Breakout Box as shown in the wiring diagram.

(See Figure 5-1.)

• Use the 30A shunt on the PA3000 for inrush current measurements. Using the 1A shunt

is not recommended for inrush current because peak currents can be quite high, even

for applications where the nominal steady state current is below 1A.

Figure 5-1. Inrush current measurement wiring diagram.

WATCH VIDEOHow to make Inrush Current Measurements

www.tek.com/inrush_video

http://www.tek.com/inrush_video

http://www.tek.com/inrush_video

30 | TEK.COM


DEMONSTRATION GUIDE

METHOD 1: INRUSH CURRENT MEASUREMENTS (PA3000 DIRECT)

The following steps describe the process for setting up the PA3000 for the inrush

current measurements.


• PA3000 Power Analyzer • BB 1000 Break Out Box

• Home or Office Appliance (DUT) • AC Source (Optional)



– Press .



The PA3000 will load the defaults and display a confirmation screen. Press and then

return to the Main Menu by pressing

NOTE: The PA3000 needs to be configured to continuously sample and return non-averaged results. It also needs to be configured to store peak values.

2. Ranging must be fixed on both the voltage and current channels to enable continuous

sampling. To select a manual range, go to the Main Menu (press) , go to

Inputs Ranging Current/Voltage range, and then select an appropriate range.

If the expected inrush current is not known, select the highest range and then dial down,

as required, after repeating the test as needed for more accurate results

3. The PA3000 automatically blanks all the results that are lower than ten percent of the range.

Blanking is continuously active and can interfere with recording the inrush event.

To disable the blanking, go to the Main Menu, go to System ConfigurationBlankingOff.

4. Set the averaging to one so that the results are not averaged over time.

Go to the Main Menu, go to System Configuration Averaging Channel Averaging.

Set the value in the window to 1.

5. Turn off the Autozero function under the System Configuration menu.

6. To enable Peak Hold, the Maximum and Minimum Hold columns need to be enabled.

Go to the Main Menu and go to Measurement Configuration Maximum HoldEnabled.

Repeat the step for the Minimum Hold.

When enabled, the Maximum and Minimum hold columns will record both positive and negative cycle peaks.

7. Enable the Peak current measurement parameters in the Measurements menu. Select both the Apk+ and Apk- because the peak can be either positive or negative.

8. After setting up the PA3000, connect the DUT to the breakout box.

9. The inrush current will be displayed in the Max and Min columns on the Results screen.

The PA3000 will hold the maximum sample value for the positive and the negative cycles.

TEK.COM | 31


DEMONSTRATION GUIDE

Figure 5-2. Min-Max columns for the Inrush current measurement.

10. To reset the Max and Min values, press the RESET/CLEAR key.

Tektronix recommends repeating the inrush current measurements by connecting the DUT

several times to capture the highest possible peak value. The highest possible peak value

occurs on the peak voltage cycle, and it is important to capture this point for the maximum

inrush current. It is also important to wait a few moments between connecting the DUT to

allow the input capacitance on the device to completely discharge.


Data Logging. The logging feature allows you to log repeated inrush current events in the

form of raw data. Use the DATA OUT key to log data onto a flash drive attached to the front

panel USB connector. Turn on the data logging before first connecting the device and run

the data logging through repeated plug-in events to capture all inrush events.

Screen Save. The screen save function allows you to save the current screen from the PA3000.

This can be useful for quickly capturing the inrush current readings. Press the SCREEN SAVE

key to save the data as a .bmp file to a flash drive connected to the front panel USB connector.

32 | TEK.COM


DEMONSTRATION GUIDE

METHOD 2: INRUSH CURRENT MEASUREMENTS (PWRVIEW SOFTWARE)

The PWRVIEW software makes it easy to quickly check inrush current measurements

on the measurement grid.



• Home or Office Application (DUT) • USB cable



Figure 5-3. Inrush current measurement.


2. After making all of the power connections, connect the PA3000 to the computer with

the PWRVIEW software installed using the supplied USB cable. Ethernet or GPIB can

also be used, if desired.


4. Click the Add button to connect the PA3000.

All available instruments will be listed in the selection panel.


6. On the Setup page, select the Group A tab.

7. Select the highest current range from the Range selection under the Current Channel settings

Any other range can be selected if the expected peak inrush current is known.

8. Select the Apk+ and Apk- measurements along with any other desired parameters.

9. Go to the Measure grid and clear the Zero Blanking check box in the top ribbon.

10. Select averaging of 1 from the drop-down menu for averaging.

11. Click the Start button. The measurements will start updating.

TEK.COM | 33


DEMONSTRATION GUIDE

12. When the measurement grid is updating, connect the DUT to measure the inrush current.

13. Hover over the Apk+ and Apk- measurements to find the maximum positive and negative

inrush current.

14. To graphically view the inrush current peak, right-click Apk+ and Apk- and then select the

Trend Measurements.

The Trend chart will start updating with real time results of Apk+ and Apk- values.

Connecting the DUT will graphically show the inrush current peak value.

15. To reset the Min and Max values on the Trend graph, click the Reset icon.

Tektronix recommends repeating the inrush current measurements by connecting the DUT several

times to capture the highest possible peak value. The highest possible peak value occurs on the

peak voltage cycle and it is important to capture this point for the maximum inrush current. It is also

important to wait a few moments between connecting the DUT to allow the input capacitance on the

device to completely discharge.


Data Logging. All instances of inrush current testing can be recorded using the Record feature

of the PWRVIEW software.

• To record data using PWRVIEW, click the Record button on the menu bar.

The software will start recording all the selected data including formulas and limits.


• All the recorded data is stored in a database on the local computer.

To access the data, click the Results tab and then click the Measure icon.

The dialog box will present all the archived data.


Contact Information: Australia* 1 800 709 465

Austria 00800 2255 4835

Balkans, Israel, South Africa and other ISE Countries +41 52 675 3777

Belgium* 00800 2255 4835

Brazil +55 (11) 3759 7627

Canada 1 800 833 9200

Central East Europe / Baltics +41 52 675 3777

Central Europe / Greece +41 52 675 3777

Denmark +45 80 88 1401

Finland +41 52 675 3777

France* 00800 2255 4835

Germany* 00800 2255 4835

Hong Kong 400 820 5835

India 000 800 650 1835

Indonesia 007 803 601 5249

Italy 00800 2255 4835

Japan 81 (3) 6714 3010

Luxembourg +41 52 675 3777

Malaysia 1 800 22 55835

Mexico, Central/South America and Caribbean 52 (55) 56 04 50 90

Middle East, Asia, and North Africa +41 52 675 3777

The Netherlands* 00800 2255 4835

New Zealand 0800 800 238

Norway 800 16098

People’s Republic of China 400 820 5835

Philippines 1 800 1601 0077

Poland +41 52 675 3777

Portugal 80 08 12370

Republic of Korea +82 2 6917 5000

Russia / CIS +7 (495) 6647564

Singapore 800 6011 473

South Africa +41 52 675 3777

Spain* 00800 2255 4835

Sweden* 00800 2255 4835

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Taiwan 886 (2) 2656 6688

Thailand 1 800 011 931

United Kingdom / Ireland* 00800 2255 4835

USA 1 800 833 9200

Vietnam 12060128

* European toll-free number. If not accessible, call: +41 52 675 3777

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Copyright © Tektronix. All rights reserved. Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published material. Specification and price change privileges reserved. TEKTRONIX and TEK are registered trademarks of Tektronix, Inc. All other trade names referenced are the service marks, trademarks or registered trademarks of their respective companies. 060616.AH 1KW-60649-0

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